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Business Combinations - Textual (Details) $ in Millions		1 Months Ended	9 Months Ended
	Mar. 01, 2019 USD ($) location	Jul. 31, 2019 USD ($) location	Sep. 30, 2019 USD ($)
Inpatient Rehabilitation Segment [Member] | Saint Alphonsus and Heritage Valley [Member]
Business Acquisition [Line Items]
Business Acquisition, Goodwill, Expected Tax Deductible Amount			$ 0.0
Home Health and Hospice Segment [Member] | Alacare [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross		$ 217.5
Business Acquisition, Goodwill, Expected Tax Deductible Amount		$ 163.9
Home Health and Hospice Segment [Member] | Tidewater and Care Resource Group [Member]
Business Acquisition [Line Items]
Business Acquisition, Goodwill, Expected Tax Deductible Amount	$ 10.8
Noncompete agreements [Member] | Inpatient Rehabilitation Segment [Member] | Saint Alphonsus and Heritage Valley [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			2 years
Noncompete agreements [Member] | Home Health and Hospice Segment [Member] | Alacare [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		5 years
Noncompete agreements [Member] | Home Health and Hospice Segment [Member] | Tidewater and Care Resource Group [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	5 years
Trade name [Member] | Inpatient Rehabilitation Segment [Member] | Saint Alphonsus and Heritage Valley [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			20 years
Trade name [Member] | Home Health and Hospice Segment [Member] | Alacare [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		6 months
Certificates of need [Member] | Home Health and Hospice Segment [Member] | Alacare [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		10 years
Certificates of need [Member] | Home Health and Hospice Segment [Member] | Tidewater and Care Resource Group [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	10 years
License [Member] | Home Health and Hospice Segment [Member] | Alacare [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		10 years
License [Member] | Home Health and Hospice Segment [Member] | Tidewater and Care Resource Group [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	10 years
Internal-use software [Member] | Home Health and Hospice Segment [Member] | Alacare [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		3 years
Home health [Member] | Home Health and Hospice Segment [Member] | Care Resource Group [Member]
Business Acquisition [Line Items]
Number of Locations of an Acquired Entity | location	2
Home health [Member] | Home Health and Hospice Segment [Member] | Alacare [Member]
Business Acquisition [Line Items]
Number of Locations of an Acquired Entity | location		23
Hospice [Member] | Home Health and Hospice Segment [Member] | Alacare [Member]
Business Acquisition [Line Items]
Number of Locations of an Acquired Entity | location		23
Corporate Joint Venture [Member] | Inpatient Rehabilitation Segment [Member] | Saint Alphonsus [Member]
Business Acquisition [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent		51.00%
Corporate Joint Venture [Member] | Inpatient Rehabilitation Segment [Member] | Heritage Valley [Member]
Business Acquisition [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent			75.00%

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+ References

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+ References

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+ References

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